Celebrating 10 Years of Cilium: What’s New and What’s Next

Cilium marks its 10th anniversary with over 60% CNI market share, 1,010+ contributors, and 24,000 GitHub stars. Key highlights include the Cilium 1.19 release featuring ztunnel mTLS integration, expanded IPv6 support, stable Multi-Pool IPAM, smarter DNS policies, and Hubble flow log aggregation. New production case studies from OVHcloud and Zynga showcase real-world impact — Zynga eliminated conntrack scaling issues by replacing kube-proxy with eBPF-based load balancing. A new O'Reilly book 'Cilium: Up and Running' and a children's illustrated guide are now available. The project is positioned as the networking data plane for AI workloads, with Microsoft and Google using it for large-scale AI training clusters.